Productivity and Efficiency

According to the U.S. Environmental Protection Agency, water efficiency is the smart use of our water resources through water-saving technologies and simple steps. Using water efficiently will help ensure reliable water supplies today and for future generations. Topics addressed in this theme provide insights, lessons, and guidance on how diverse stakeholders are working to improve water management and reduce water use.

Productivity and Efficiency Resources

Annual Report: Production of B-Carotene and Other Carotenoids By the Alga Dunaliella and Their Use as a Source of Vitamin a and Pigments in Aquatic Organisms -- August 29, 1989-August 28, 1990

Publication date:
August 1, 1990
U.S. Agency for International Development
In the present first year study we grew D. bardawilin outdoor miniponds, harvested the algae by centrifugation and lyophilized the paste to a dry Beta-carotene-rich powder. In parallel, attempts were made to extract the Beta-carotene from the algae and partially purify the 9-cis stereoisomer. The...Read more
Regional/Country focus:
Thailand
East Asia and Pacific

Title XII Collaborative Research Support Program: Eighth Annual Administrative Report [Pond Dynamics/Aquaculture] (1 September 1989 to 31 August 1990)

Publication date:
August 1, 1990
U.S. Agency for International Development
The major accomplishments of this reporting period include the development of cost-effective fertilization strategies, the creation of models on pond dynamics, the validation of models and expert systems, and continued efforts toward the dissemination of results and information.Read more

Tank Irrigation in South India: What Next?

Publication date:
July 1, 1990
U.S. Agency for International Development
Tanks are a common feature of the south Indian cultural landscape, irrigating about one third of the total rice area in the states of Andhra Pradesh, Karnataka, and Tamil Nadu. The concentration of tanks is high in these states because of topographical features such as undulating terrain, hard...Read more
Regional/Country focus:
India
South East Asia

Nitrogen Input, Primary Productivity and Fish Yield in Fertilized Freshwater Ponds in Indonesia

Publication date:
July 1, 1990
U.S. Agency for International Development
Twelve 0.2 ha ponds in West Java were fertilized weekly with four levels of chicken manure during a 149 day grow out experiment for Nile tilapia production. Laboratory leaching experiments for measuring dissolved inorganic nitrogen (DIN) release from chicken manure showed that nitrogen was released...Read more
Regional/Country focus:
Indonesia
East Asia and Pacific

Irrigation Systems Management-II Project: Plan of Work

Publication date:
July 1, 1990
U.S. Agency for International Development
The Irrigation Systems Management (ISM) project is the first major instance of foreign donors directly supporting the activities of the Provincial Irrigation Departments (PIDs) in the construction, operation and maintenance of irrigation and drainage systems. Each department has extensive field...Read more
Regional/Country focus:
Pakistan
South East Asia

Importance of Mangroves in Sustaining Fisheries and Controlling Water Quality in Coastal Ecosystems: Progress and Data Report

Publication date:
January 1, 1990
U.S. Agency for International Development
Mangroves are forested wetlands that inhabit the intertidalzone of tropical and subtropical estuaries. It has beensuggested that these wetlands provide both food and habitat for a diverse fishery, and that the yields of some commerciallyimportant species are dependent on the area of this vegetation...Read more

Water Production Functions as Related to Time and Amount of Irrigation and Rain

Publication date:
May 29, 1990
U.S. Agency for International Development
Winrock International
The workshop had the following objectives: 1. Consider the basic processes that determine crop water use and soil water balance characteristics. 2. Discuss the theoretical and experimental methods for evaluation of evapotranspiration (soil evaporation and transpiration). 3. Consider the effect...Read more
Regional/Country focus:
India
South East Asia

Pond Dynamics/Aquaculture Collaborative Research Data Reports -- Volume Six, Number One, Honduras Project: Cycle I of the CRSP Global Experiment

Publication date:
April 27, 1990
U.S. Agency for International Development
The objective of this research was to quantify the physical, chemical, and biological characteristics of experimental ponds, stocked with Oreochromis niloticus and fertilized only with phosphorus, during the dry and rainy seasons (CRSP First Work Plan, undated). Fish yields after 150 days were...Read more
Regional/Country focus:
Honduras
Latin America and the Caribbean

Pond Dynamics/Aquaculture Collaborative Research Data Reports -- Volume Seven, Number Two, Gualaca, Panama: Cycle III of the CRSP Global Experiment

Publication date:
April 20, 1990
U.S. Agency for International Development
During Cycle Ill, the effects of increased nutrient inputs on the chemical, physical and biological variables that had been studied during Cycle were recorded. The objectives of Cycle III were to establish the optimum application rates of chicken litter for tilapia production in Panama, to measure...Read more
Regional/Country focus:
Panama
Latin America and the Caribbean

Aquaculture Research and Development in Rural Africa

Publication date:
April 1, 1990
U.S. Agency for International Development
Aquaculture development in Africa has lagged far behind that in other developing regions while human needs for additional protein are just as urgent. This volume reports results from an international conference convened in Zomba, Malawi, that reviewed the progress of the first three years of ICLARM...Read more
Regional/Country focus:
Sub-Saharan Africa

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